Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
10066 results returnedSearch results
- Minor mineral fertilizer materials
- Review of coal-mine fatalities in Indiana during the last 3 months of 1932 and the calendar year 1933
- Summary of drifting and crosscutting cost data
- Sand and gravel excavation.
- Recent trends in design and construction of copper concentrators in the Southwest
- Coal-Mine Accidents in the United States, 1933
- Manufacture of Paraffin Wax from Petroleum
- Engineering Factors in the Ventilation of Metal Mines
- Waste filling of stopes
- Gold and silver custom plants
- The rare earths
- List of devices for respiratory protection approved by the U.S. Bureau of Mines
- Asbestos :milling, marketing, and fabrication
- Quarry Accidents in the United States During the Calendar Year 1933
- Quarrying and crushing methods and costs at the Plainville, (Conn.,) trap-rock quarry of the New Haven Trap Rock Co., New Britain, Conn.
- Some suggestions on the safe handling of electric shovel trailing cables in open-pit mines
- Mining and grinding methods and costs at the Dennison Sewer Pipe Company Clay Mine, Dennison, Ohio
- Pebble phosphate accident experience
- Competitive conditions in the international coal trade
- Mining methods used in the Grundy coal field of Buchanan County, Va.
- Suggested methods for the reduction of mine accidents from the viewpoint of the safety engineer
- Consumption of primary and secondary tin in the United States in 1935
- Coal-mine explosions and coal- and metal-mine fires in the United States during the fiscal year ended June 30, 1936
- Shaft sinking with a shot drill, Idaho Maryland Mine, Grass Valley, Calif.
- Analyses of New Mexico coals
- Sand and gravel excavation.
- Cooperative fuel research motor-gasoline survey :winter 1935-36
- Some factors affecting an accident-prevention program in metal mining in California
- Trends in white-pigment consumption
- Silicosis as affecting mining workmen and operations
- Coal-mine fatalities in Kentucky in 1934
- Mining and grinding methods and costs at the Evans Pipe Co. Clay Mine, Ulrichsville, Ohio
- Mining and grinding methods and costs at the Clay City Pipe Co. Clay Mine, Uhrichsville, Ohio
- Some problems of respiratory protection in the petroleum industry :with suggestions for their solution
- Charts for determining the performance of centrifugal fans
- Preventing accidents by the proper use of permissible explosives
- Hazard of igniting coal by electric circuits in mines
- Prospecting for lode gold
- Jade
- Coal-mine explosions and fires in the United States :during the fiscal year ended June 30, 1935
- How to use permissible explosives properly
- Methane-indicating detectors prove dependable in sampling air in anthracite mines
- Sand and gravel excavation.
- Progress report on investigation of detachable rock-drill bits
- Notes on testing and explosibility of coal dusts and a proposal to have an international test method
- Quarrying and crushing methods and costs at the Avon Mountain trap rock quarry of the Atlas Sand, Gravel & Stone Co., West Hartford, Conn.
- Mining and milling methods and costs :Hog Mountain Gold Mining and Milling Co., Alexander City, Ala.
- Some suggestions on the prevention of electrical accidents in coal mines
- Mining methods and costs at the Park City Consolidated Mines Co., Park City, Utah
- Alums and aluminum sulphate